Emphysematous cholecystitis is a severe form of acute cholecystitis caused by gas-forming bacterial infections that can lead to gallbladder gangrene or perforation. It commonly affects men between 50-70 years old with underlying conditions like diabetes. Diagnosis can be made using imaging modalities like CT, USG, or X-ray that detect air within the gallbladder walls or lumen. Patients experience right upper quadrant pain. Without prompt treatment, emphysematous cholecystitis carries a high risk of mortality.